SQ1D
Klark Teknik
SQ1D
Klark Teknik SQ1D 8-Channel Compressor/Gate
The Square ONE SQ1D dynamics provides eight channels of configurable, high-performance dynamics processing in a 3U package. Users can select the required mode of operation, allowing the multi-mode dynamics processor to function as a “vintage” compressor (peak-sensing type), broadband frequency-conscious compressor, hi-Q frequency-conscious compressor (de-esser), limiter, expander or gate. Square ONE dynamics also provides i-TS (Intelligent Threshold Shift) with the gate-hold function to reduce chattering within the gate, stereo and multichannel operation, solo bus operation, 6–segment/3-color input meter and 10-segment attenuation depth meter.
Product Weight: 9.9 lbs
Dimensions: 19"W x 7.88"D x 3.5"H (2 units)
Technical Tools
PDF Documents
Manufacturer Specs
Inputs: 8 (mic/line)
Type: Analogue, electronically balanced, female XLRs (Pin 2 hot)
Maximum input level: +22dBu
Input impedance: 5kΩ
Common mode rejection ratio (CMRR)
-80dB at 1kHz (typical), unity gain (0dB)
-100dB at 1kHz (typical), maximum gain (+40dB)
Outputs: 16 (rear panel)
Type: Analogue, electronically balanced, male XLRs (Pin 2 hot)
Operating level: 0dB
Maximum level: +22dBu
Output impedance: <50Ω
Signal drive capacity: <600Ω
Outputs 8 (front panel)
Type: Analogue, transformer isolated balanced, male XLRs (Pin 2 hot)
Operating level: -6dB
Maximum level: +22dBu
Output impedance: <75Ω
Signal drive capacity: <600Ω
Headphone output: 1
Type: Analogue, TRS jack socket
Rating: 750mW (nominal 50Ω load)
Terminations Audio
Front panel connectors
Channel input: eight x AA series female XLRs (labelled “IN 1” to “IN 8”)
Isolated output C: eight x AA series male XLRs (labelled “TX OUT 1” to “TX OUT 8”)
Headphone output: one 1/4” TRS balanced jack socket
Rear panel connectors
Channel input: eight x AA series female XLRs (labelled “IN 1” to “IN 8”)
Electronic output A: eight x AA series male XLRs (labelled “OUT A”)
Electronic output B: eight x AA series male XLRs (labelled “OUT B”)
Power: 3-pin IEC
Performance
Frequency response1: ±0.5dB (input to output), 20Hz to 20kHz
Distortion: <0.02% @ 1kHz, 0dBu at unity gain
Dynamic range2:
Electronically balanced outputs: >122dB*
Transformer isolated outputs: >140dB*
Noise floor3: Unity gain <-100dBu*, Mic EIN @ +40dB gain <-128dBu*
High pass filter
Filter frequency: -3dB @ 30Hz
Filter slope: 12dB per octave
Power Requirements
Voltage: 100VAC to 240VAC ±10%
Frequency: 50Hz to 60Hz
Consumption: <35W
Notes:
1. Measurement conditions: unit powered, all filters bypassed, unity gain and output terminated with 20kΩ balanced loads.
2. Measurement conditions: unit powered, both inputs terminated with 150Ω, all filters bypassed, unity gain set to 0dB and outputs terminated with 20kΩ balanced loads.
3. Measurement conditions: unit powered, all inputs terminated with 150Ω, all filters bypassed, outputs terminated with 20kΩ balanced loads.
Type: Analogue, electronically balanced, female XLRs (Pin 2 hot)
Maximum input level: +22dBu
Input impedance: 5kΩ
Common mode rejection ratio (CMRR)
-80dB at 1kHz (typical), unity gain (0dB)
-100dB at 1kHz (typical), maximum gain (+40dB)
Outputs: 16 (rear panel)
Type: Analogue, electronically balanced, male XLRs (Pin 2 hot)
Operating level: 0dB
Maximum level: +22dBu
Output impedance: <50Ω
Signal drive capacity: <600Ω
Outputs 8 (front panel)
Type: Analogue, transformer isolated balanced, male XLRs (Pin 2 hot)
Operating level: -6dB
Maximum level: +22dBu
Output impedance: <75Ω
Signal drive capacity: <600Ω
Headphone output: 1
Type: Analogue, TRS jack socket
Rating: 750mW (nominal 50Ω load)
Terminations Audio
Front panel connectors
Channel input: eight x AA series female XLRs (labelled “IN 1” to “IN 8”)
Isolated output C: eight x AA series male XLRs (labelled “TX OUT 1” to “TX OUT 8”)
Headphone output: one 1/4” TRS balanced jack socket
Rear panel connectors
Channel input: eight x AA series female XLRs (labelled “IN 1” to “IN 8”)
Electronic output A: eight x AA series male XLRs (labelled “OUT A”)
Electronic output B: eight x AA series male XLRs (labelled “OUT B”)
Power: 3-pin IEC
Performance
Frequency response1: ±0.5dB (input to output), 20Hz to 20kHz
Distortion: <0.02% @ 1kHz, 0dBu at unity gain
Dynamic range2:
Electronically balanced outputs: >122dB*
Transformer isolated outputs: >140dB*
Noise floor3: Unity gain <-100dBu*, Mic EIN @ +40dB gain <-128dBu*
High pass filter
Filter frequency: -3dB @ 30Hz
Filter slope: 12dB per octave
Power Requirements
Voltage: 100VAC to 240VAC ±10%
Frequency: 50Hz to 60Hz
Consumption: <35W
Notes:
1. Measurement conditions: unit powered, all filters bypassed, unity gain and output terminated with 20kΩ balanced loads.
2. Measurement conditions: unit powered, both inputs terminated with 150Ω, all filters bypassed, unity gain set to 0dB and outputs terminated with 20kΩ balanced loads.
3. Measurement conditions: unit powered, all inputs terminated with 150Ω, all filters bypassed, outputs terminated with 20kΩ balanced loads.

